Function writeableDir

src/tempdir.js:11–25

(dir)

// Returns false if 'dir' is not a writeable directory, 'dir' otherwise
function writeableDir(dir) {
  if (!dir || !fs.existsSync(dir)) return false;

  if (!common.statFollowLinks(dir).isDirectory()) return false;

  var testFile = dir + '/' + common.randomFileName();
  try {
    fs.writeFileSync(testFile, ' ');
    common.unlinkSync(testFile);
    return dir;
  } catch (e) {
    /* istanbul ignore next */
    return false;
  }
}

// Variable to cache the tempdir value for successive lookups.
var cachedTempDir;